In a negative feedback mechanism, which of the following events does not occur.
a. A stimulus is a change in some variable.
b. A receptor perceives a stimulus.
c. The control center sends output to an effector.
d. The effector stimulates or increases the stimulus, so the cycle continues.
d. The effector stimulates or increases the stimulus, so the cycle continues.
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Which statement is FALSE with regard to proteins?
A. Their roles in the body include acting as enzymes, providing structural support, and signaling between cells. B. They are macromolecules with subunits linked by polypeptide bonds. C. They are polymers made up of amino acids. D. They are composed of nucleic acids. E. They make up a greater percentage of body mass than carbohydrates do.
A professional fighter hit in the mental region might have damage to the
A. jaw.?B. ear.?C. nose.?D. knee.?E. shoulder.
The coracohumeral ligament is associated with the
A) knee joint. B) elbow joint. C) hip joint. D) shoulder joint.
In contrast to slow oxidative fibers, fast glycolytic fibers ________.
A. have more capillaries B. fatigue more quickly C. contain more myoglobin D. contain more mitochondria E. contract more slowly